21803540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1$

素因数の和:213

約数の個数: 96

約数和(自身を含む): 54190080

約数和(自身を除く): 32386540

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 23, 31, 44, 46, 55, 62, 92, 110, 115, 124, 139, 155, 220, 230, 253, 278, 310, 341, 460, 506, 556, 620, 682, 695, 713, 1012, 1265, 1364, 1390, 1426, 1529, 1705, 2530, 2780, 2852, 3058, 3197, 3410, 3565, 4309, 5060, 6116, 6394, 6820, 7130, 7645, 7843, 8618, 12788, 14260, 15290, 15686, 15985, 17236, 21545, 30580, 31372, 31970, 35167, 39215, 43090, 47399, 63940, 70334, 78430, 86180, 94798, 99107, 140668, 156860, 175835, 189596, 198214, 236995, 351670, 396428, 473990, 495535, 703340, 947980, 991070, 1090177, 1982140, 2180354, 4360708, 5450885, 10901770, 21803540]

約数ペア:

[(1, 21803540), (2, 10901770), (4, 5450885), (5, 4360708), (10, 2180354), (11, 1982140), (20, 1090177), (22, 991070), (23, 947980), (31, 703340), (44, 495535), (46, 473990), (55, 396428), (62, 351670), (92, 236995), (110, 198214), (115, 189596), (124, 175835), (139, 156860), (155, 140668), (220, 99107), (230, 94798), (253, 86180), (278, 78430), (310, 70334), (341, 63940), (460, 47399), (506, 43090), (556, 39215), (620, 35167), (682, 31970), (695, 31372), (713, 30580), (1012, 21545), (1265, 17236), (1364, 15985), (1390, 15686), (1426, 15290), (1529, 14260), (1705, 12788), (2530, 8618), (2780, 7843), (2852, 7645), (3058, 7130), (3197, 6820), (3410, 6394), (3565, 6116), (4309, 5060)]