638218880

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{971}}^1$

素因数の和:1082

約数の個数: 128

約数和(自身を含む): 1665619200

約数和(自身を除く): 1027400320

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 79, 80, 104, 128, 130, 158, 160, 208, 260, 316, 320, 395, 416, 520, 632, 640, 790, 832, 971, 1027, 1040, 1264, 1580, 1664, 1942, 2054, 2080, 2528, 3160, 3884, 4108, 4160, 4855, 5056, 5135, 6320, 7768, 8216, 8320, 9710, 10112, 10270, 12623, 12640, 15536, 16432, 19420, 20540, 25246, 25280, 31072, 32864, 38840, 41080, 50492, 50560, 62144, 63115, 65728, 76709, 77680, 82160, 100984, 124288, 126230, 131456, 153418, 155360, 164320, 201968, 252460, 306836, 310720, 328640, 383545, 403936, 504920, 613672, 621440, 657280, 767090, 807872, 997217, 1009840, 1227344, 1534180, 1615744, 1994434, 2019680, 2454688, 3068360, 3988868, 4039360, 4909376, 4986085, 6136720, 7977736, 8078720, 9818752, 9972170, 12273440, 15955472, 19944340, 24546880, 31910944, 39888680, 49093760, 63821888, 79777360, 127643776, 159554720, 319109440, 638218880]

約数ペア:

[(1, 638218880), (2, 319109440), (4, 159554720), (5, 127643776), (8, 79777360), (10, 63821888), (13, 49093760), (16, 39888680), (20, 31910944), (26, 24546880), (32, 19944340), (40, 15955472), (52, 12273440), (64, 9972170), (65, 9818752), (79, 8078720), (80, 7977736), (104, 6136720), (128, 4986085), (130, 4909376), (158, 4039360), (160, 3988868), (208, 3068360), (260, 2454688), (316, 2019680), (320, 1994434), (395, 1615744), (416, 1534180), (520, 1227344), (632, 1009840), (640, 997217), (790, 807872), (832, 767090), (971, 657280), (1027, 621440), (1040, 613672), (1264, 504920), (1580, 403936), (1664, 383545), (1942, 328640), (2054, 310720), (2080, 306836), (2528, 252460), (3160, 201968), (3884, 164320), (4108, 155360), (4160, 153418), (4855, 131456), (5056, 126230), (5135, 124288), (6320, 100984), (7768, 82160), (8216, 77680), (8320, 76709), (9710, 65728), (10112, 63115), (10270, 62144), (12623, 50560), (12640, 50492), (15536, 41080), (16432, 38840), (19420, 32864), (20540, 31072), (25246, 25280)]