20815080

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1213}}^1$

素因数の和:1251

約数の個数: 128

約数和(自身を含む): 73422720

約数和(自身を除く): 52607640

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 13, 15, 20, 22, 24, 26, 30, 33, 39, 40, 44, 52, 55, 60, 65, 66, 78, 88, 104, 110, 120, 130, 132, 143, 156, 165, 195, 220, 260, 264, 286, 312, 330, 390, 429, 440, 520, 572, 660, 715, 780, 858, 1144, 1213, 1320, 1430, 1560, 1716, 2145, 2426, 2860, 3432, 3639, 4290, 4852, 5720, 6065, 7278, 8580, 9704, 12130, 13343, 14556, 15769, 17160, 18195, 24260, 26686, 29112, 31538, 36390, 40029, 47307, 48520, 53372, 63076, 66715, 72780, 78845, 80058, 94614, 106744, 126152, 133430, 145560, 157690, 160116, 173459, 189228, 200145, 236535, 266860, 315380, 320232, 346918, 378456, 400290, 473070, 520377, 533720, 630760, 693836, 800580, 867295, 946140, 1040754, 1387672, 1601160, 1734590, 1892280, 2081508, 2601885, 3469180, 4163016, 5203770, 6938360, 10407540, 20815080]

約数ペア:

[(1, 20815080), (2, 10407540), (3, 6938360), (4, 5203770), (5, 4163016), (6, 3469180), (8, 2601885), (10, 2081508), (11, 1892280), (12, 1734590), (13, 1601160), (15, 1387672), (20, 1040754), (22, 946140), (24, 867295), (26, 800580), (30, 693836), (33, 630760), (39, 533720), (40, 520377), (44, 473070), (52, 400290), (55, 378456), (60, 346918), (65, 320232), (66, 315380), (78, 266860), (88, 236535), (104, 200145), (110, 189228), (120, 173459), (130, 160116), (132, 157690), (143, 145560), (156, 133430), (165, 126152), (195, 106744), (220, 94614), (260, 80058), (264, 78845), (286, 72780), (312, 66715), (330, 63076), (390, 53372), (429, 48520), (440, 47307), (520, 40029), (572, 36390), (660, 31538), (715, 29112), (780, 26686), (858, 24260), (1144, 18195), (1213, 17160), (1320, 15769), (1430, 14556), (1560, 13343), (1716, 12130), (2145, 9704), (2426, 8580), (2860, 7278), (3432, 6065), (3639, 5720), (4290, 4852)]