21170760

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{331}}^1$

素因数の和:399

約数の個数: 128

約数和(自身を含む): 70277760

約数和(自身を除く): 49107000

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 41, 52, 60, 65, 78, 82, 104, 120, 123, 130, 156, 164, 195, 205, 246, 260, 312, 328, 331, 390, 410, 492, 520, 533, 615, 662, 780, 820, 984, 993, 1066, 1230, 1324, 1560, 1599, 1640, 1655, 1986, 2132, 2460, 2648, 2665, 3198, 3310, 3972, 4264, 4303, 4920, 4965, 5330, 6396, 6620, 7944, 7995, 8606, 9930, 10660, 12792, 12909, 13240, 13571, 15990, 17212, 19860, 21320, 21515, 25818, 27142, 31980, 34424, 39720, 40713, 43030, 51636, 54284, 63960, 64545, 67855, 81426, 86060, 103272, 108568, 129090, 135710, 162852, 172120, 176423, 203565, 258180, 271420, 325704, 352846, 407130, 516360, 529269, 542840, 705692, 814260, 882115, 1058538, 1411384, 1628520, 1764230, 2117076, 2646345, 3528460, 4234152, 5292690, 7056920, 10585380, 21170760]

約数ペア:

[(1, 21170760), (2, 10585380), (3, 7056920), (4, 5292690), (5, 4234152), (6, 3528460), (8, 2646345), (10, 2117076), (12, 1764230), (13, 1628520), (15, 1411384), (20, 1058538), (24, 882115), (26, 814260), (30, 705692), (39, 542840), (40, 529269), (41, 516360), (52, 407130), (60, 352846), (65, 325704), (78, 271420), (82, 258180), (104, 203565), (120, 176423), (123, 172120), (130, 162852), (156, 135710), (164, 129090), (195, 108568), (205, 103272), (246, 86060), (260, 81426), (312, 67855), (328, 64545), (331, 63960), (390, 54284), (410, 51636), (492, 43030), (520, 40713), (533, 39720), (615, 34424), (662, 31980), (780, 27142), (820, 25818), (984, 21515), (993, 21320), (1066, 19860), (1230, 17212), (1324, 15990), (1560, 13571), (1599, 13240), (1640, 12909), (1655, 12792), (1986, 10660), (2132, 9930), (2460, 8606), (2648, 7995), (2665, 7944), (3198, 6620), (3310, 6396), (3972, 5330), (4264, 4965), (4303, 4920)]