31506020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{2473}}^1$

素因数の和:2509

約数の個数: 72

約数和(自身を含む): 82918584

約数和(自身を除く): 51412564

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 49, 52, 65, 70, 91, 98, 130, 140, 182, 196, 245, 260, 364, 455, 490, 637, 910, 980, 1274, 1820, 2473, 2548, 3185, 4946, 6370, 9892, 12365, 12740, 17311, 24730, 32149, 34622, 49460, 64298, 69244, 86555, 121177, 128596, 160745, 173110, 225043, 242354, 321490, 346220, 450086, 484708, 605885, 642980, 900172, 1125215, 1211770, 1575301, 2250430, 2423540, 3150602, 4500860, 6301204, 7876505, 15753010, 31506020]

約数ペア:

[(1, 31506020), (2, 15753010), (4, 7876505), (5, 6301204), (7, 4500860), (10, 3150602), (13, 2423540), (14, 2250430), (20, 1575301), (26, 1211770), (28, 1125215), (35, 900172), (49, 642980), (52, 605885), (65, 484708), (70, 450086), (91, 346220), (98, 321490), (130, 242354), (140, 225043), (182, 173110), (196, 160745), (245, 128596), (260, 121177), (364, 86555), (455, 69244), (490, 64298), (637, 49460), (910, 34622), (980, 32149), (1274, 24730), (1820, 17311), (2473, 12740), (2548, 12365), (3185, 9892), (4946, 6370)]