208339820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{53}}^1\times {\mathrm{1163}}^1$

素因数の和:1251

約数の個数: 72

約数和(自身を含む): 483111216

約数和(自身を除く): 274771396

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 53, 65, 106, 130, 169, 212, 260, 265, 338, 530, 676, 689, 845, 1060, 1163, 1378, 1690, 2326, 2756, 3380, 3445, 4652, 5815, 6890, 8957, 11630, 13780, 15119, 17914, 23260, 30238, 35828, 44785, 60476, 61639, 75595, 89570, 123278, 151190, 179140, 196547, 246556, 302380, 308195, 393094, 616390, 786188, 801307, 982735, 1232780, 1602614, 1965470, 3205228, 3930940, 4006535, 8013070, 10416991, 16026140, 20833982, 41667964, 52084955, 104169910, 208339820]

約数ペア:

[(1, 208339820), (2, 104169910), (4, 52084955), (5, 41667964), (10, 20833982), (13, 16026140), (20, 10416991), (26, 8013070), (52, 4006535), (53, 3930940), (65, 3205228), (106, 1965470), (130, 1602614), (169, 1232780), (212, 982735), (260, 801307), (265, 786188), (338, 616390), (530, 393094), (676, 308195), (689, 302380), (845, 246556), (1060, 196547), (1163, 179140), (1378, 151190), (1690, 123278), (2326, 89570), (2756, 75595), (3380, 61639), (3445, 60476), (4652, 44785), (5815, 35828), (6890, 30238), (8957, 23260), (11630, 17914), (13780, 15119)]