21272040

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{1597}}^1$

素因数の和:1651

約数の個数: 96

約数和(自身を含む): 71047080

約数和(自身を除く): 49775040

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 37, 40, 45, 60, 72, 74, 90, 111, 120, 148, 180, 185, 222, 296, 333, 360, 370, 444, 555, 666, 740, 888, 1110, 1332, 1480, 1597, 1665, 2220, 2664, 3194, 3330, 4440, 4791, 6388, 6660, 7985, 9582, 12776, 13320, 14373, 15970, 19164, 23955, 28746, 31940, 38328, 47910, 57492, 59089, 63880, 71865, 95820, 114984, 118178, 143730, 177267, 191640, 236356, 287460, 295445, 354534, 472712, 531801, 574920, 590890, 709068, 886335, 1063602, 1181780, 1418136, 1772670, 2127204, 2363560, 2659005, 3545340, 4254408, 5318010, 7090680, 10636020, 21272040]

約数ペア:

[(1, 21272040), (2, 10636020), (3, 7090680), (4, 5318010), (5, 4254408), (6, 3545340), (8, 2659005), (9, 2363560), (10, 2127204), (12, 1772670), (15, 1418136), (18, 1181780), (20, 1063602), (24, 886335), (30, 709068), (36, 590890), (37, 574920), (40, 531801), (45, 472712), (60, 354534), (72, 295445), (74, 287460), (90, 236356), (111, 191640), (120, 177267), (148, 143730), (180, 118178), (185, 114984), (222, 95820), (296, 71865), (333, 63880), (360, 59089), (370, 57492), (444, 47910), (555, 38328), (666, 31940), (740, 28746), (888, 23955), (1110, 19164), (1332, 15970), (1480, 14373), (1597, 13320), (1665, 12776), (2220, 9582), (2664, 7985), (3194, 6660), (3330, 6388), (4440, 4791)]