31998820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{101}}^1$

素因数の和:221

約数の個数: 96

約数和(自身を含む): 81156096

約数和(自身を除く): 49157276

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 73, 101, 124, 140, 146, 155, 202, 217, 292, 310, 365, 404, 434, 505, 511, 620, 707, 730, 868, 1010, 1022, 1085, 1414, 1460, 2020, 2044, 2170, 2263, 2555, 2828, 3131, 3535, 4340, 4526, 5110, 6262, 7070, 7373, 9052, 10220, 11315, 12524, 14140, 14746, 15655, 15841, 21917, 22630, 29492, 31310, 31682, 36865, 43834, 45260, 51611, 62620, 63364, 73730, 79205, 87668, 103222, 109585, 147460, 158410, 206444, 219170, 228563, 258055, 316820, 438340, 457126, 516110, 914252, 1032220, 1142815, 1599941, 2285630, 3199882, 4571260, 6399764, 7999705, 15999410, 31998820]

約数ペア:

[(1, 31998820), (2, 15999410), (4, 7999705), (5, 6399764), (7, 4571260), (10, 3199882), (14, 2285630), (20, 1599941), (28, 1142815), (31, 1032220), (35, 914252), (62, 516110), (70, 457126), (73, 438340), (101, 316820), (124, 258055), (140, 228563), (146, 219170), (155, 206444), (202, 158410), (217, 147460), (292, 109585), (310, 103222), (365, 87668), (404, 79205), (434, 73730), (505, 63364), (511, 62620), (620, 51611), (707, 45260), (730, 43834), (868, 36865), (1010, 31682), (1022, 31310), (1085, 29492), (1414, 22630), (1460, 21917), (2020, 15841), (2044, 15655), (2170, 14746), (2263, 14140), (2555, 12524), (2828, 11315), (3131, 10220), (3535, 9052), (4340, 7373), (4526, 7070), (5110, 6262)]