20459400

素因数分解:

$2^3\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1$

素因数の和:136

約数の個数: 192

約数和(自身を含む): 71037120

約数和(自身を除く): 50577720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 25, 26, 30, 39, 40, 43, 50, 52, 60, 61, 65, 75, 78, 86, 100, 104, 120, 122, 129, 130, 150, 156, 172, 183, 195, 200, 215, 244, 258, 260, 300, 305, 312, 325, 344, 366, 390, 430, 488, 516, 520, 559, 600, 610, 645, 650, 732, 780, 793, 860, 915, 975, 1032, 1075, 1118, 1220, 1290, 1300, 1464, 1525, 1560, 1586, 1677, 1720, 1830, 1950, 2150, 2236, 2379, 2440, 2580, 2600, 2623, 2795, 3050, 3172, 3225, 3354, 3660, 3900, 3965, 4300, 4472, 4575, 4758, 5160, 5246, 5590, 6100, 6344, 6450, 6708, 7320, 7800, 7869, 7930, 8385, 8600, 9150, 9516, 10492, 11180, 11895, 12200, 12900, 13115, 13416, 13975, 15738, 15860, 16770, 18300, 19032, 19825, 20984, 22360, 23790, 25800, 26230, 27950, 31476, 31720, 33540, 34099, 36600, 39345, 39650, 41925, 47580, 52460, 55900, 59475, 62952, 65575, 67080, 68198, 78690, 79300, 83850, 95160, 102297, 104920, 111800, 118950, 131150, 136396, 157380, 158600, 167700, 170495, 196725, 204594, 237900, 262300, 272792, 314760, 335400, 340990, 393450, 409188, 475800, 511485, 524600, 681980, 786900, 818376, 852475, 1022970, 1363960, 1573800, 1704950, 2045940, 2557425, 3409900, 4091880, 5114850, 6819800, 10229700, 20459400]

約数ペア:

[(1, 20459400), (2, 10229700), (3, 6819800), (4, 5114850), (5, 4091880), (6, 3409900), (8, 2557425), (10, 2045940), (12, 1704950), (13, 1573800), (15, 1363960), (20, 1022970), (24, 852475), (25, 818376), (26, 786900), (30, 681980), (39, 524600), (40, 511485), (43, 475800), (50, 409188), (52, 393450), (60, 340990), (61, 335400), (65, 314760), (75, 272792), (78, 262300), (86, 237900), (100, 204594), (104, 196725), (120, 170495), (122, 167700), (129, 158600), (130, 157380), (150, 136396), (156, 131150), (172, 118950), (183, 111800), (195, 104920), (200, 102297), (215, 95160), (244, 83850), (258, 79300), (260, 78690), (300, 68198), (305, 67080), (312, 65575), (325, 62952), (344, 59475), (366, 55900), (390, 52460), (430, 47580), (488, 41925), (516, 39650), (520, 39345), (559, 36600), (600, 34099), (610, 33540), (645, 31720), (650, 31476), (732, 27950), (780, 26230), (793, 25800), (860, 23790), (915, 22360), (975, 20984), (1032, 19825), (1075, 19032), (1118, 18300), (1220, 16770), (1290, 15860), (1300, 15738), (1464, 13975), (1525, 13416), (1560, 13115), (1586, 12900), (1677, 12200), (1720, 11895), (1830, 11180), (1950, 10492), (2150, 9516), (2236, 9150), (2379, 8600), (2440, 8385), (2580, 7930), (2600, 7869), (2623, 7800), (2795, 7320), (3050, 6708), (3172, 6450), (3225, 6344), (3354, 6100), (3660, 5590), (3900, 5246), (3965, 5160), (4300, 4758), (4472, 4575)]