28872780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^2\times {\mathrm{31}}^1\times {\mathrm{43}}^1$

素因数の和:124

約数の個数: 144

約数和(自身を含む): 90123264

約数和(自身を除く): 61250484

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 31, 38, 43, 57, 60, 62, 76, 86, 93, 95, 114, 124, 129, 155, 172, 186, 190, 215, 228, 258, 285, 310, 361, 372, 380, 430, 465, 516, 570, 589, 620, 645, 722, 817, 860, 930, 1083, 1140, 1178, 1290, 1333, 1444, 1634, 1767, 1805, 1860, 2166, 2356, 2451, 2580, 2666, 2945, 3268, 3534, 3610, 3999, 4085, 4332, 4902, 5332, 5415, 5890, 6665, 7068, 7220, 7998, 8170, 8835, 9804, 10830, 11191, 11780, 12255, 13330, 15523, 15996, 16340, 17670, 19995, 21660, 22382, 24510, 25327, 26660, 31046, 33573, 35340, 39990, 44764, 46569, 49020, 50654, 55955, 62092, 67146, 75981, 77615, 79980, 93138, 101308, 111910, 126635, 134292, 151962, 155230, 167865, 186276, 223820, 232845, 253270, 303924, 310460, 335730, 379905, 465690, 481213, 506540, 671460, 759810, 931380, 962426, 1443639, 1519620, 1924852, 2406065, 2887278, 4812130, 5774556, 7218195, 9624260, 14436390, 28872780]

約数ペア:

[(1, 28872780), (2, 14436390), (3, 9624260), (4, 7218195), (5, 5774556), (6, 4812130), (10, 2887278), (12, 2406065), (15, 1924852), (19, 1519620), (20, 1443639), (30, 962426), (31, 931380), (38, 759810), (43, 671460), (57, 506540), (60, 481213), (62, 465690), (76, 379905), (86, 335730), (93, 310460), (95, 303924), (114, 253270), (124, 232845), (129, 223820), (155, 186276), (172, 167865), (186, 155230), (190, 151962), (215, 134292), (228, 126635), (258, 111910), (285, 101308), (310, 93138), (361, 79980), (372, 77615), (380, 75981), (430, 67146), (465, 62092), (516, 55955), (570, 50654), (589, 49020), (620, 46569), (645, 44764), (722, 39990), (817, 35340), (860, 33573), (930, 31046), (1083, 26660), (1140, 25327), (1178, 24510), (1290, 22382), (1333, 21660), (1444, 19995), (1634, 17670), (1767, 16340), (1805, 15996), (1860, 15523), (2166, 13330), (2356, 12255), (2451, 11780), (2580, 11191), (2666, 10830), (2945, 9804), (3268, 8835), (3534, 8170), (3610, 7998), (3999, 7220), (4085, 7068), (4332, 6665), (4902, 5890), (5332, 5415)]