21240270

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{331}}^1$

素因数の和:398

約数の個数: 96

約数和(自身を含む): 59664384

約数和(自身を除く): 38424114

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 23, 30, 31, 45, 46, 62, 69, 90, 93, 115, 138, 155, 186, 207, 230, 279, 310, 331, 345, 414, 465, 558, 662, 690, 713, 930, 993, 1035, 1395, 1426, 1655, 1986, 2070, 2139, 2790, 2979, 3310, 3565, 4278, 4965, 5958, 6417, 7130, 7613, 9930, 10261, 10695, 12834, 14895, 15226, 20522, 21390, 22839, 29790, 30783, 32085, 38065, 45678, 51305, 61566, 64170, 68517, 76130, 92349, 102610, 114195, 137034, 153915, 184698, 228390, 236003, 307830, 342585, 461745, 472006, 685170, 708009, 923490, 1180015, 1416018, 2124027, 2360030, 3540045, 4248054, 7080090, 10620135, 21240270]

約数ペア:

[(1, 21240270), (2, 10620135), (3, 7080090), (5, 4248054), (6, 3540045), (9, 2360030), (10, 2124027), (15, 1416018), (18, 1180015), (23, 923490), (30, 708009), (31, 685170), (45, 472006), (46, 461745), (62, 342585), (69, 307830), (90, 236003), (93, 228390), (115, 184698), (138, 153915), (155, 137034), (186, 114195), (207, 102610), (230, 92349), (279, 76130), (310, 68517), (331, 64170), (345, 61566), (414, 51305), (465, 45678), (558, 38065), (662, 32085), (690, 30783), (713, 29790), (930, 22839), (993, 21390), (1035, 20522), (1395, 15226), (1426, 14895), (1655, 12834), (1986, 10695), (2070, 10261), (2139, 9930), (2790, 7613), (2979, 7130), (3310, 6417), (3565, 5958), (4278, 4965)]