13021840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{659}}^1$

素因数の和:704

約数の個数: 80

約数和(自身を含む): 34372800

約数和(自身を除く): 21350960

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 38, 40, 52, 65, 76, 80, 95, 104, 130, 152, 190, 208, 247, 260, 304, 380, 494, 520, 659, 760, 988, 1040, 1235, 1318, 1520, 1976, 2470, 2636, 3295, 3952, 4940, 5272, 6590, 8567, 9880, 10544, 12521, 13180, 17134, 19760, 25042, 26360, 34268, 42835, 50084, 52720, 62605, 68536, 85670, 100168, 125210, 137072, 162773, 171340, 200336, 250420, 325546, 342680, 500840, 651092, 685360, 813865, 1001680, 1302184, 1627730, 2604368, 3255460, 6510920, 13021840]

約数ペア:

[(1, 13021840), (2, 6510920), (4, 3255460), (5, 2604368), (8, 1627730), (10, 1302184), (13, 1001680), (16, 813865), (19, 685360), (20, 651092), (26, 500840), (38, 342680), (40, 325546), (52, 250420), (65, 200336), (76, 171340), (80, 162773), (95, 137072), (104, 125210), (130, 100168), (152, 85670), (190, 68536), (208, 62605), (247, 52720), (260, 50084), (304, 42835), (380, 34268), (494, 26360), (520, 25042), (659, 19760), (760, 17134), (988, 13180), (1040, 12521), (1235, 10544), (1318, 9880), (1520, 8567), (1976, 6590), (2470, 5272), (2636, 4940), (3295, 3952)]