15891720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{167}}^1$

素因数の和:255

約数の個数: 128

約数和(自身を含む): 52496640

約数和(自身を除く): 36604920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 61, 65, 78, 104, 120, 122, 130, 156, 167, 183, 195, 244, 260, 305, 312, 334, 366, 390, 488, 501, 520, 610, 668, 732, 780, 793, 835, 915, 1002, 1220, 1336, 1464, 1560, 1586, 1670, 1830, 2004, 2171, 2379, 2440, 2505, 3172, 3340, 3660, 3965, 4008, 4342, 4758, 5010, 6344, 6513, 6680, 7320, 7930, 8684, 9516, 10020, 10187, 10855, 11895, 13026, 15860, 17368, 19032, 20040, 20374, 21710, 23790, 26052, 30561, 31720, 32565, 40748, 43420, 47580, 50935, 52104, 61122, 65130, 81496, 86840, 95160, 101870, 122244, 130260, 132431, 152805, 203740, 244488, 260520, 264862, 305610, 397293, 407480, 529724, 611220, 662155, 794586, 1059448, 1222440, 1324310, 1589172, 1986465, 2648620, 3178344, 3972930, 5297240, 7945860, 15891720]

約数ペア:

[(1, 15891720), (2, 7945860), (3, 5297240), (4, 3972930), (5, 3178344), (6, 2648620), (8, 1986465), (10, 1589172), (12, 1324310), (13, 1222440), (15, 1059448), (20, 794586), (24, 662155), (26, 611220), (30, 529724), (39, 407480), (40, 397293), (52, 305610), (60, 264862), (61, 260520), (65, 244488), (78, 203740), (104, 152805), (120, 132431), (122, 130260), (130, 122244), (156, 101870), (167, 95160), (183, 86840), (195, 81496), (244, 65130), (260, 61122), (305, 52104), (312, 50935), (334, 47580), (366, 43420), (390, 40748), (488, 32565), (501, 31720), (520, 30561), (610, 26052), (668, 23790), (732, 21710), (780, 20374), (793, 20040), (835, 19032), (915, 17368), (1002, 15860), (1220, 13026), (1336, 11895), (1464, 10855), (1560, 10187), (1586, 10020), (1670, 9516), (1830, 8684), (2004, 7930), (2171, 7320), (2379, 6680), (2440, 6513), (2505, 6344), (3172, 5010), (3340, 4758), (3660, 4342), (3965, 4008)]