25661480

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{809}}^1$

素因数の和:894

約数の個数: 64

約数和(自身を含む): 63277200

約数和(自身を除く): 37615720

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 61, 65, 104, 122, 130, 244, 260, 305, 488, 520, 610, 793, 809, 1220, 1586, 1618, 2440, 3172, 3236, 3965, 4045, 6344, 6472, 7930, 8090, 10517, 15860, 16180, 21034, 31720, 32360, 42068, 49349, 52585, 84136, 98698, 105170, 197396, 210340, 246745, 394792, 420680, 493490, 641537, 986980, 1283074, 1973960, 2566148, 3207685, 5132296, 6415370, 12830740, 25661480]

約数ペア:

[(1, 25661480), (2, 12830740), (4, 6415370), (5, 5132296), (8, 3207685), (10, 2566148), (13, 1973960), (20, 1283074), (26, 986980), (40, 641537), (52, 493490), (61, 420680), (65, 394792), (104, 246745), (122, 210340), (130, 197396), (244, 105170), (260, 98698), (305, 84136), (488, 52585), (520, 49349), (610, 42068), (793, 32360), (809, 31720), (1220, 21034), (1586, 16180), (1618, 15860), (2440, 10517), (3172, 8090), (3236, 7930), (3965, 6472), (4045, 6344)]