21432780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{167}}^1$

素因数の和:236

約数の個数: 144

約数和(自身を含む): 70447104

約数和(自身を除く): 49014324

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 30, 31, 36, 45, 46, 60, 62, 69, 90, 92, 93, 115, 124, 138, 155, 167, 180, 186, 207, 230, 276, 279, 310, 334, 345, 372, 414, 460, 465, 501, 558, 620, 668, 690, 713, 828, 835, 930, 1002, 1035, 1116, 1380, 1395, 1426, 1503, 1670, 1860, 2004, 2070, 2139, 2505, 2790, 2852, 3006, 3340, 3565, 3841, 4140, 4278, 5010, 5177, 5580, 6012, 6417, 7130, 7515, 7682, 8556, 10020, 10354, 10695, 11523, 12834, 14260, 15030, 15364, 15531, 19205, 20708, 21390, 23046, 25668, 25885, 30060, 31062, 32085, 34569, 38410, 42780, 46092, 46593, 51770, 57615, 62124, 64170, 69138, 76820, 77655, 93186, 103540, 115230, 119071, 128340, 138276, 155310, 172845, 186372, 230460, 232965, 238142, 310620, 345690, 357213, 465930, 476284, 595355, 691380, 714426, 931860, 1071639, 1190710, 1428852, 1786065, 2143278, 2381420, 3572130, 4286556, 5358195, 7144260, 10716390, 21432780]

約数ペア:

[(1, 21432780), (2, 10716390), (3, 7144260), (4, 5358195), (5, 4286556), (6, 3572130), (9, 2381420), (10, 2143278), (12, 1786065), (15, 1428852), (18, 1190710), (20, 1071639), (23, 931860), (30, 714426), (31, 691380), (36, 595355), (45, 476284), (46, 465930), (60, 357213), (62, 345690), (69, 310620), (90, 238142), (92, 232965), (93, 230460), (115, 186372), (124, 172845), (138, 155310), (155, 138276), (167, 128340), (180, 119071), (186, 115230), (207, 103540), (230, 93186), (276, 77655), (279, 76820), (310, 69138), (334, 64170), (345, 62124), (372, 57615), (414, 51770), (460, 46593), (465, 46092), (501, 42780), (558, 38410), (620, 34569), (668, 32085), (690, 31062), (713, 30060), (828, 25885), (835, 25668), (930, 23046), (1002, 21390), (1035, 20708), (1116, 19205), (1380, 15531), (1395, 15364), (1426, 15030), (1503, 14260), (1670, 12834), (1860, 11523), (2004, 10695), (2070, 10354), (2139, 10020), (2505, 8556), (2790, 7682), (2852, 7515), (3006, 7130), (3340, 6417), (3565, 6012), (3841, 5580), (4140, 5177), (4278, 5010)]