81703860

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{4139}}^1$

素因数の和:4205

約数の個数: 96

約数和(自身を含む): 267079680

約数和(自身を除く): 185375820

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 47, 60, 70, 84, 94, 105, 140, 141, 188, 210, 235, 282, 329, 420, 470, 564, 658, 705, 940, 987, 1316, 1410, 1645, 1974, 2820, 3290, 3948, 4139, 4935, 6580, 8278, 9870, 12417, 16556, 19740, 20695, 24834, 28973, 41390, 49668, 57946, 62085, 82780, 86919, 115892, 124170, 144865, 173838, 194533, 248340, 289730, 347676, 389066, 434595, 579460, 583599, 778132, 869190, 972665, 1167198, 1361731, 1738380, 1945330, 2334396, 2723462, 2917995, 3890660, 4085193, 5446924, 5835990, 6808655, 8170386, 11671980, 13617310, 16340772, 20425965, 27234620, 40851930, 81703860]

約数ペア:

[(1, 81703860), (2, 40851930), (3, 27234620), (4, 20425965), (5, 16340772), (6, 13617310), (7, 11671980), (10, 8170386), (12, 6808655), (14, 5835990), (15, 5446924), (20, 4085193), (21, 3890660), (28, 2917995), (30, 2723462), (35, 2334396), (42, 1945330), (47, 1738380), (60, 1361731), (70, 1167198), (84, 972665), (94, 869190), (105, 778132), (140, 583599), (141, 579460), (188, 434595), (210, 389066), (235, 347676), (282, 289730), (329, 248340), (420, 194533), (470, 173838), (564, 144865), (658, 124170), (705, 115892), (940, 86919), (987, 82780), (1316, 62085), (1410, 57946), (1645, 49668), (1974, 41390), (2820, 28973), (3290, 24834), (3948, 20695), (4139, 19740), (4935, 16556), (6580, 12417), (8278, 9870)]