720908120

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{83}}^1\times {\mathrm{241}}^1$

素因数の和:405

約数の個数: 128

約数和(自身を含む): 1778293440

約数和(自身を除く): 1057385320

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 53, 68, 83, 85, 106, 136, 166, 170, 212, 241, 265, 332, 340, 415, 424, 482, 530, 664, 680, 830, 901, 964, 1060, 1205, 1411, 1660, 1802, 1928, 2120, 2410, 2822, 3320, 3604, 4097, 4399, 4505, 4820, 5644, 7055, 7208, 8194, 8798, 9010, 9640, 11288, 12773, 14110, 16388, 17596, 18020, 20003, 20485, 21995, 25546, 28220, 32776, 35192, 36040, 40006, 40970, 43990, 51092, 56440, 63865, 74783, 80012, 81940, 87980, 100015, 102184, 127730, 149566, 160024, 163880, 175960, 200030, 217141, 255460, 299132, 340051, 373915, 400060, 434282, 510920, 598264, 680102, 747830, 800120, 868564, 1060159, 1085705, 1360204, 1495660, 1700255, 1737128, 2120318, 2171410, 2720408, 2991320, 3400510, 4240636, 4342820, 5300795, 6801020, 8481272, 8685640, 10601590, 13602040, 18022703, 21203180, 36045406, 42406360, 72090812, 90113515, 144181624, 180227030, 360454060, 720908120]

約数ペア:

[(1, 720908120), (2, 360454060), (4, 180227030), (5, 144181624), (8, 90113515), (10, 72090812), (17, 42406360), (20, 36045406), (34, 21203180), (40, 18022703), (53, 13602040), (68, 10601590), (83, 8685640), (85, 8481272), (106, 6801020), (136, 5300795), (166, 4342820), (170, 4240636), (212, 3400510), (241, 2991320), (265, 2720408), (332, 2171410), (340, 2120318), (415, 1737128), (424, 1700255), (482, 1495660), (530, 1360204), (664, 1085705), (680, 1060159), (830, 868564), (901, 800120), (964, 747830), (1060, 680102), (1205, 598264), (1411, 510920), (1660, 434282), (1802, 400060), (1928, 373915), (2120, 340051), (2410, 299132), (2822, 255460), (3320, 217141), (3604, 200030), (4097, 175960), (4399, 163880), (4505, 160024), (4820, 149566), (5644, 127730), (7055, 102184), (7208, 100015), (8194, 87980), (8798, 81940), (9010, 80012), (9640, 74783), (11288, 63865), (12773, 56440), (14110, 51092), (16388, 43990), (17596, 40970), (18020, 40006), (20003, 36040), (20485, 35192), (21995, 32776), (25546, 28220)]