64261760

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1$

素因数の和:170

約数の個数: 128

約数和(自身を含む): 164505600

約数和(自身を除く): 100243840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 41, 62, 64, 79, 80, 82, 124, 128, 155, 158, 160, 164, 205, 248, 310, 316, 320, 328, 395, 410, 496, 620, 632, 640, 656, 790, 820, 992, 1240, 1264, 1271, 1312, 1580, 1640, 1984, 2449, 2480, 2528, 2542, 2624, 3160, 3239, 3280, 3968, 4898, 4960, 5056, 5084, 5248, 6320, 6355, 6478, 6560, 9796, 9920, 10112, 10168, 12245, 12640, 12710, 12956, 13120, 16195, 19592, 19840, 20336, 24490, 25280, 25420, 25912, 26240, 32390, 39184, 40672, 48980, 50560, 50840, 51824, 64780, 78368, 81344, 97960, 100409, 101680, 103648, 129560, 156736, 162688, 195920, 200818, 203360, 207296, 259120, 313472, 391840, 401636, 406720, 414592, 502045, 518240, 783680, 803272, 813440, 1004090, 1036480, 1567360, 1606544, 2008180, 2072960, 3213088, 4016360, 6426176, 8032720, 12852352, 16065440, 32130880, 64261760]

約数ペア:

[(1, 64261760), (2, 32130880), (4, 16065440), (5, 12852352), (8, 8032720), (10, 6426176), (16, 4016360), (20, 3213088), (31, 2072960), (32, 2008180), (40, 1606544), (41, 1567360), (62, 1036480), (64, 1004090), (79, 813440), (80, 803272), (82, 783680), (124, 518240), (128, 502045), (155, 414592), (158, 406720), (160, 401636), (164, 391840), (205, 313472), (248, 259120), (310, 207296), (316, 203360), (320, 200818), (328, 195920), (395, 162688), (410, 156736), (496, 129560), (620, 103648), (632, 101680), (640, 100409), (656, 97960), (790, 81344), (820, 78368), (992, 64780), (1240, 51824), (1264, 50840), (1271, 50560), (1312, 48980), (1580, 40672), (1640, 39184), (1984, 32390), (2449, 26240), (2480, 25912), (2528, 25420), (2542, 25280), (2624, 24490), (3160, 20336), (3239, 19840), (3280, 19592), (3968, 16195), (4898, 13120), (4960, 12956), (5056, 12710), (5084, 12640), (5248, 12245), (6320, 10168), (6355, 10112), (6478, 9920), (6560, 9796)]