18579990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:166

約数の個数: 128

約数和(自身を含む): 53996544

約数和(自身を除く): 35416554

約数列:

[1, 2, 3, 5, 6, 10, 11, 13, 15, 22, 26, 30, 33, 39, 55, 61, 65, 66, 71, 78, 110, 122, 130, 142, 143, 165, 183, 195, 213, 286, 305, 330, 355, 366, 390, 426, 429, 610, 671, 710, 715, 781, 793, 858, 915, 923, 1065, 1342, 1430, 1562, 1586, 1830, 1846, 2013, 2130, 2145, 2343, 2379, 2769, 3355, 3905, 3965, 4026, 4290, 4331, 4615, 4686, 4758, 5538, 6710, 7810, 7930, 8662, 8723, 9230, 10065, 10153, 11715, 11895, 12993, 13845, 17446, 20130, 20306, 21655, 23430, 23790, 25986, 26169, 27690, 30459, 43310, 43615, 47641, 50765, 52338, 56303, 60918, 64965, 87230, 95282, 101530, 112606, 129930, 130845, 142923, 152295, 168909, 238205, 261690, 281515, 285846, 304590, 337818, 476410, 563030, 619333, 714615, 844545, 1238666, 1429230, 1689090, 1857999, 3096665, 3715998, 6193330, 9289995, 18579990]

約数ペア:

[(1, 18579990), (2, 9289995), (3, 6193330), (5, 3715998), (6, 3096665), (10, 1857999), (11, 1689090), (13, 1429230), (15, 1238666), (22, 844545), (26, 714615), (30, 619333), (33, 563030), (39, 476410), (55, 337818), (61, 304590), (65, 285846), (66, 281515), (71, 261690), (78, 238205), (110, 168909), (122, 152295), (130, 142923), (142, 130845), (143, 129930), (165, 112606), (183, 101530), (195, 95282), (213, 87230), (286, 64965), (305, 60918), (330, 56303), (355, 52338), (366, 50765), (390, 47641), (426, 43615), (429, 43310), (610, 30459), (671, 27690), (710, 26169), (715, 25986), (781, 23790), (793, 23430), (858, 21655), (915, 20306), (923, 20130), (1065, 17446), (1342, 13845), (1430, 12993), (1562, 11895), (1586, 11715), (1830, 10153), (1846, 10065), (2013, 9230), (2130, 8723), (2145, 8662), (2343, 7930), (2379, 7810), (2769, 6710), (3355, 5538), (3905, 4758), (3965, 4686), (4026, 4615), (4290, 4331)]