1219723520

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{521}}^1$

素因数の和:632

約数の個数: 144

約数和(自身を含む): 3072867840

約数和(自身を除く): 1853144320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 59, 62, 64, 80, 118, 124, 128, 155, 160, 236, 248, 256, 295, 310, 320, 472, 496, 521, 590, 620, 640, 944, 992, 1042, 1180, 1240, 1280, 1829, 1888, 1984, 2084, 2360, 2480, 2605, 3658, 3776, 3968, 4168, 4720, 4960, 5210, 7316, 7552, 7936, 8336, 9145, 9440, 9920, 10420, 14632, 15104, 16151, 16672, 18290, 18880, 19840, 20840, 29264, 30739, 32302, 33344, 36580, 37760, 39680, 41680, 58528, 61478, 64604, 66688, 73160, 75520, 80755, 83360, 117056, 122956, 129208, 133376, 146320, 153695, 161510, 166720, 234112, 245912, 258416, 292640, 307390, 323020, 333440, 468224, 491824, 516832, 585280, 614780, 646040, 666880, 952909, 983648, 1033664, 1170560, 1229560, 1292080, 1905818, 1967296, 2067328, 2341120, 2459120, 2584160, 3811636, 3934592, 4134656, 4764545, 4918240, 5168320, 7623272, 7869184, 9529090, 9836480, 10336640, 15246544, 19058180, 19672960, 20673280, 30493088, 38116360, 39345920, 60986176, 76232720, 121972352, 152465440, 243944704, 304930880, 609861760, 1219723520]

約数ペア:

[(1, 1219723520), (2, 609861760), (4, 304930880), (5, 243944704), (8, 152465440), (10, 121972352), (16, 76232720), (20, 60986176), (31, 39345920), (32, 38116360), (40, 30493088), (59, 20673280), (62, 19672960), (64, 19058180), (80, 15246544), (118, 10336640), (124, 9836480), (128, 9529090), (155, 7869184), (160, 7623272), (236, 5168320), (248, 4918240), (256, 4764545), (295, 4134656), (310, 3934592), (320, 3811636), (472, 2584160), (496, 2459120), (521, 2341120), (590, 2067328), (620, 1967296), (640, 1905818), (944, 1292080), (992, 1229560), (1042, 1170560), (1180, 1033664), (1240, 983648), (1280, 952909), (1829, 666880), (1888, 646040), (1984, 614780), (2084, 585280), (2360, 516832), (2480, 491824), (2605, 468224), (3658, 333440), (3776, 323020), (3968, 307390), (4168, 292640), (4720, 258416), (4960, 245912), (5210, 234112), (7316, 166720), (7552, 161510), (7936, 153695), (8336, 146320), (9145, 133376), (9440, 129208), (9920, 122956), (10420, 117056), (14632, 83360), (15104, 80755), (16151, 75520), (16672, 73160), (18290, 66688), (18880, 64604), (19840, 61478), (20840, 58528), (29264, 41680), (30739, 39680), (32302, 37760), (33344, 36580)]