20130397720

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{197}}^1\times {\mathrm{41879}}^1$

素因数の和:42148

約数の個数: 64

約数和(自身を含む): 46270699200

約数和(自身を除く): 26140301480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 197, 244, 305, 394, 488, 610, 788, 985, 1220, 1576, 1970, 2440, 3940, 7880, 12017, 24034, 41879, 48068, 60085, 83758, 96136, 120170, 167516, 209395, 240340, 335032, 418790, 480680, 837580, 1675160, 2554619, 5109238, 8250163, 10218476, 12773095, 16500326, 20436952, 25546190, 33000652, 41250815, 51092380, 66001304, 82501630, 102184760, 165003260, 330006520, 503259943, 1006519886, 2013039772, 2516299715, 4026079544, 5032599430, 10065198860, 20130397720]

約数ペア:

[(1, 20130397720), (2, 10065198860), (4, 5032599430), (5, 4026079544), (8, 2516299715), (10, 2013039772), (20, 1006519886), (40, 503259943), (61, 330006520), (122, 165003260), (197, 102184760), (244, 82501630), (305, 66001304), (394, 51092380), (488, 41250815), (610, 33000652), (788, 25546190), (985, 20436952), (1220, 16500326), (1576, 12773095), (1970, 10218476), (2440, 8250163), (3940, 5109238), (7880, 2554619), (12017, 1675160), (24034, 837580), (41879, 480680), (48068, 418790), (60085, 335032), (83758, 240340), (96136, 209395), (120170, 167516)]