25280840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{797}}^1$

素因数の和:882

約数の個数: 64

約数和(自身を含む): 62339760

約数和(自身を除く): 37058920

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, 797, 1220, 1586, 1594, 2440, 3172, 3188, 3965, 3985, 6344, 6376, 7930, 7970, 10361, 15860, 15940, 20722, 31720, 31880, 41444, 48617, 51805, 82888, 97234, 103610, 194468, 207220, 243085, 388936, 414440, 486170, 632021, 972340, 1264042, 1944680, 2528084, 3160105, 5056168, 6320210, 12640420, 25280840]

約数ペア:

[(1, 25280840), (2, 12640420), (4, 6320210), (5, 5056168), (8, 3160105), (10, 2528084), (13, 1944680), (20, 1264042), (26, 972340), (40, 632021), (52, 486170), (61, 414440), (65, 388936), (104, 243085), (122, 207220), (130, 194468), (244, 103610), (260, 97234), (305, 82888), (488, 51805), (520, 48617), (610, 41444), (793, 31880), (797, 31720), (1220, 20722), (1586, 15940), (1594, 15860), (2440, 10361), (3172, 7970), (3188, 7930), (3965, 6376), (3985, 6344)]