31988340

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{2503}}^1$

素因数の和:2589

約数の個数: 72

約数和(自身を含む): 98437248

約数和(自身を除く): 66448908

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 71, 90, 142, 180, 213, 284, 355, 426, 639, 710, 852, 1065, 1278, 1420, 2130, 2503, 2556, 3195, 4260, 5006, 6390, 7509, 10012, 12515, 12780, 15018, 22527, 25030, 30036, 37545, 45054, 50060, 75090, 90108, 112635, 150180, 177713, 225270, 355426, 450540, 533139, 710852, 888565, 1066278, 1599417, 1777130, 2132556, 2665695, 3198834, 3554260, 5331390, 6397668, 7997085, 10662780, 15994170, 31988340]

約数ペア:

[(1, 31988340), (2, 15994170), (3, 10662780), (4, 7997085), (5, 6397668), (6, 5331390), (9, 3554260), (10, 3198834), (12, 2665695), (15, 2132556), (18, 1777130), (20, 1599417), (30, 1066278), (36, 888565), (45, 710852), (60, 533139), (71, 450540), (90, 355426), (142, 225270), (180, 177713), (213, 150180), (284, 112635), (355, 90108), (426, 75090), (639, 50060), (710, 45054), (852, 37545), (1065, 30036), (1278, 25030), (1420, 22527), (2130, 15018), (2503, 12780), (2556, 12515), (3195, 10012), (4260, 7509), (5006, 6390)]