1990380

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{677}}^1$

素因数の和:703

約数の個数: 72

約数和(自身を含む): 6492528

約数和(自身を除く): 4502148

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 677, 735, 980, 1354, 1470, 2031, 2708, 2940, 3385, 4062, 4739, 6770, 8124, 9478, 10155, 13540, 14217, 18956, 20310, 23695, 28434, 33173, 40620, 47390, 56868, 66346, 71085, 94780, 99519, 132692, 142170, 165865, 199038, 284340, 331730, 398076, 497595, 663460, 995190, 1990380]

約数ペア:

[(1, 1990380), (2, 995190), (3, 663460), (4, 497595), (5, 398076), (6, 331730), (7, 284340), (10, 199038), (12, 165865), (14, 142170), (15, 132692), (20, 99519), (21, 94780), (28, 71085), (30, 66346), (35, 56868), (42, 47390), (49, 40620), (60, 33173), (70, 28434), (84, 23695), (98, 20310), (105, 18956), (140, 14217), (147, 13540), (196, 10155), (210, 9478), (245, 8124), (294, 6770), (420, 4739), (490, 4062), (588, 3385), (677, 2940), (735, 2708), (980, 2031), (1354, 1470)]