20103520

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{389}}^1$

素因数の和:440

約数の個数: 96

約数和(自身を含む): 53071200

約数和(自身を除く): 32967680

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 19, 20, 32, 34, 38, 40, 68, 76, 80, 85, 95, 136, 152, 160, 170, 190, 272, 304, 323, 340, 380, 389, 544, 608, 646, 680, 760, 778, 1292, 1360, 1520, 1556, 1615, 1945, 2584, 2720, 3040, 3112, 3230, 3890, 5168, 6224, 6460, 6613, 7391, 7780, 10336, 12448, 12920, 13226, 14782, 15560, 25840, 26452, 29564, 31120, 33065, 36955, 51680, 52904, 59128, 62240, 66130, 73910, 105808, 118256, 125647, 132260, 147820, 211616, 236512, 251294, 264520, 295640, 502588, 529040, 591280, 628235, 1005176, 1058080, 1182560, 1256470, 2010352, 2512940, 4020704, 5025880, 10051760, 20103520]

約数ペア:

[(1, 20103520), (2, 10051760), (4, 5025880), (5, 4020704), (8, 2512940), (10, 2010352), (16, 1256470), (17, 1182560), (19, 1058080), (20, 1005176), (32, 628235), (34, 591280), (38, 529040), (40, 502588), (68, 295640), (76, 264520), (80, 251294), (85, 236512), (95, 211616), (136, 147820), (152, 132260), (160, 125647), (170, 118256), (190, 105808), (272, 73910), (304, 66130), (323, 62240), (340, 59128), (380, 52904), (389, 51680), (544, 36955), (608, 33065), (646, 31120), (680, 29564), (760, 26452), (778, 25840), (1292, 15560), (1360, 14782), (1520, 13226), (1556, 12920), (1615, 12448), (1945, 10336), (2584, 7780), (2720, 7391), (3040, 6613), (3112, 6460), (3230, 6224), (3890, 5168)]