21917620

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1$

素因数の和:145

約数の個数: 96

約数和(自身を含む): 52254720

約数和(自身を除く): 30337100

約数列:

[1, 2, 4, 5, 10, 20, 23, 29, 31, 46, 53, 58, 62, 92, 106, 115, 116, 124, 145, 155, 212, 230, 265, 290, 310, 460, 530, 580, 620, 667, 713, 899, 1060, 1219, 1334, 1426, 1537, 1643, 1798, 2438, 2668, 2852, 3074, 3286, 3335, 3565, 3596, 4495, 4876, 6095, 6148, 6572, 6670, 7130, 7685, 8215, 8990, 12190, 13340, 14260, 15370, 16430, 17980, 20677, 24380, 30740, 32860, 35351, 37789, 41354, 47647, 70702, 75578, 82708, 95294, 103385, 141404, 151156, 176755, 188945, 190588, 206770, 238235, 353510, 377890, 413540, 476470, 707020, 755780, 952940, 1095881, 2191762, 4383524, 5479405, 10958810, 21917620]

約数ペア:

[(1, 21917620), (2, 10958810), (4, 5479405), (5, 4383524), (10, 2191762), (20, 1095881), (23, 952940), (29, 755780), (31, 707020), (46, 476470), (53, 413540), (58, 377890), (62, 353510), (92, 238235), (106, 206770), (115, 190588), (116, 188945), (124, 176755), (145, 151156), (155, 141404), (212, 103385), (230, 95294), (265, 82708), (290, 75578), (310, 70702), (460, 47647), (530, 41354), (580, 37789), (620, 35351), (667, 32860), (713, 30740), (899, 24380), (1060, 20677), (1219, 17980), (1334, 16430), (1426, 15370), (1537, 14260), (1643, 13340), (1798, 12190), (2438, 8990), (2668, 8215), (2852, 7685), (3074, 7130), (3286, 6670), (3335, 6572), (3565, 6148), (3596, 6095), (4495, 4876)]