89707820

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^2\times {\mathrm{61}}^1\times {\mathrm{139}}^1$

素因数の和:255

約数の個数: 72

約数和(自身を含む): 201601680

約数和(自身を除く): 111893860

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 61, 92, 115, 122, 139, 230, 244, 278, 305, 460, 529, 556, 610, 695, 1058, 1220, 1390, 1403, 2116, 2645, 2780, 2806, 3197, 5290, 5612, 6394, 7015, 8479, 10580, 12788, 14030, 15985, 16958, 28060, 31970, 32269, 33916, 42395, 63940, 64538, 73531, 84790, 129076, 147062, 161345, 169580, 195017, 294124, 322690, 367655, 390034, 645380, 735310, 780068, 975085, 1470620, 1950170, 3900340, 4485391, 8970782, 17941564, 22426955, 44853910, 89707820]

約数ペア:

[(1, 89707820), (2, 44853910), (4, 22426955), (5, 17941564), (10, 8970782), (20, 4485391), (23, 3900340), (46, 1950170), (61, 1470620), (92, 975085), (115, 780068), (122, 735310), (139, 645380), (230, 390034), (244, 367655), (278, 322690), (305, 294124), (460, 195017), (529, 169580), (556, 161345), (610, 147062), (695, 129076), (1058, 84790), (1220, 73531), (1390, 64538), (1403, 63940), (2116, 42395), (2645, 33916), (2780, 32269), (2806, 31970), (3197, 28060), (5290, 16958), (5612, 15985), (6394, 14030), (7015, 12788), (8479, 10580)]