19571240

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{617}}^1$

素因数の和:702

約数の個数: 64

約数和(自身を含む): 48278160

約数和(自身を除く): 28706920

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, 617, 793, 1220, 1234, 1586, 2440, 2468, 3085, 3172, 3965, 4936, 6170, 6344, 7930, 8021, 12340, 15860, 16042, 24680, 31720, 32084, 37637, 40105, 64168, 75274, 80210, 150548, 160420, 188185, 301096, 320840, 376370, 489281, 752740, 978562, 1505480, 1957124, 2446405, 3914248, 4892810, 9785620, 19571240]

約数ペア:

[(1, 19571240), (2, 9785620), (4, 4892810), (5, 3914248), (8, 2446405), (10, 1957124), (13, 1505480), (20, 978562), (26, 752740), (40, 489281), (52, 376370), (61, 320840), (65, 301096), (104, 188185), (122, 160420), (130, 150548), (244, 80210), (260, 75274), (305, 64168), (488, 40105), (520, 37637), (610, 32084), (617, 31720), (793, 24680), (1220, 16042), (1234, 15860), (1586, 12340), (2440, 8021), (2468, 7930), (3085, 6344), (3172, 6170), (3965, 4936)]