21605970

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{173}}^1\times {\mathrm{181}}^1$

素因数の和:387

約数の個数: 64

約数和(自身を含む): 54722304

約数和(自身を除く): 33116334

約数列:

[1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 173, 181, 230, 345, 346, 362, 519, 543, 690, 865, 905, 1038, 1086, 1730, 1810, 2595, 2715, 3979, 4163, 5190, 5430, 7958, 8326, 11937, 12489, 19895, 20815, 23874, 24978, 31313, 39790, 41630, 59685, 62445, 62626, 93939, 119370, 124890, 156565, 187878, 313130, 469695, 720199, 939390, 1440398, 2160597, 3600995, 4321194, 7201990, 10802985, 21605970]

約数ペア:

[(1, 21605970), (2, 10802985), (3, 7201990), (5, 4321194), (6, 3600995), (10, 2160597), (15, 1440398), (23, 939390), (30, 720199), (46, 469695), (69, 313130), (115, 187878), (138, 156565), (173, 124890), (181, 119370), (230, 93939), (345, 62626), (346, 62445), (362, 59685), (519, 41630), (543, 39790), (690, 31313), (865, 24978), (905, 23874), (1038, 20815), (1086, 19895), (1730, 12489), (1810, 11937), (2595, 8326), (2715, 7958), (3979, 5430), (4163, 5190)]