21720150

素因数分解:

$2^1\times 3^4\times 5^2\times {\mathrm{31}}^1\times {\mathrm{173}}^1$

素因数の和:228

約数の個数: 120

約数和(自身を含む): 62656704

約数和(自身を除く): 40936554

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 25, 27, 30, 31, 45, 50, 54, 62, 75, 81, 90, 93, 135, 150, 155, 162, 173, 186, 225, 270, 279, 310, 346, 405, 450, 465, 519, 558, 675, 775, 810, 837, 865, 930, 1038, 1350, 1395, 1550, 1557, 1674, 1730, 2025, 2325, 2511, 2595, 2790, 3114, 4050, 4185, 4325, 4650, 4671, 5022, 5190, 5363, 6975, 7785, 8370, 8650, 9342, 10726, 12555, 12975, 13950, 14013, 15570, 16089, 20925, 23355, 25110, 25950, 26815, 28026, 32178, 38925, 41850, 46710, 48267, 53630, 62775, 70065, 77850, 80445, 96534, 116775, 125550, 134075, 140130, 144801, 160890, 233550, 241335, 268150, 289602, 350325, 402225, 434403, 482670, 700650, 724005, 804450, 868806, 1206675, 1448010, 2172015, 2413350, 3620025, 4344030, 7240050, 10860075, 21720150]

約数ペア:

[(1, 21720150), (2, 10860075), (3, 7240050), (5, 4344030), (6, 3620025), (9, 2413350), (10, 2172015), (15, 1448010), (18, 1206675), (25, 868806), (27, 804450), (30, 724005), (31, 700650), (45, 482670), (50, 434403), (54, 402225), (62, 350325), (75, 289602), (81, 268150), (90, 241335), (93, 233550), (135, 160890), (150, 144801), (155, 140130), (162, 134075), (173, 125550), (186, 116775), (225, 96534), (270, 80445), (279, 77850), (310, 70065), (346, 62775), (405, 53630), (450, 48267), (465, 46710), (519, 41850), (558, 38925), (675, 32178), (775, 28026), (810, 26815), (837, 25950), (865, 25110), (930, 23355), (1038, 20925), (1350, 16089), (1395, 15570), (1550, 14013), (1557, 13950), (1674, 12975), (1730, 12555), (2025, 10726), (2325, 9342), (2511, 8650), (2595, 8370), (2790, 7785), (3114, 6975), (4050, 5363), (4185, 5190), (4325, 5022), (4650, 4671)]