81743480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1321}}^1$

素因数の和:1369

約数の個数: 128

約数和(自身を含む): 239863680

約数和(自身を除く): 158120200

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 17, 20, 26, 28, 34, 35, 40, 52, 56, 65, 68, 70, 85, 91, 104, 119, 130, 136, 140, 170, 182, 221, 238, 260, 280, 340, 364, 442, 455, 476, 520, 595, 680, 728, 884, 910, 952, 1105, 1190, 1321, 1547, 1768, 1820, 2210, 2380, 2642, 3094, 3640, 4420, 4760, 5284, 6188, 6605, 7735, 8840, 9247, 10568, 12376, 13210, 15470, 17173, 18494, 22457, 26420, 30940, 34346, 36988, 44914, 46235, 52840, 61880, 68692, 73976, 85865, 89828, 92470, 112285, 120211, 137384, 157199, 171730, 179656, 184940, 224570, 240422, 291941, 314398, 343460, 369880, 449140, 480844, 583882, 601055, 628796, 686920, 785995, 898280, 961688, 1167764, 1202110, 1257592, 1459705, 1571990, 2043587, 2335528, 2404220, 2919410, 3143980, 4087174, 4808440, 5838820, 6287960, 8174348, 10217935, 11677640, 16348696, 20435870, 40871740, 81743480]

約数ペア:

[(1, 81743480), (2, 40871740), (4, 20435870), (5, 16348696), (7, 11677640), (8, 10217935), (10, 8174348), (13, 6287960), (14, 5838820), (17, 4808440), (20, 4087174), (26, 3143980), (28, 2919410), (34, 2404220), (35, 2335528), (40, 2043587), (52, 1571990), (56, 1459705), (65, 1257592), (68, 1202110), (70, 1167764), (85, 961688), (91, 898280), (104, 785995), (119, 686920), (130, 628796), (136, 601055), (140, 583882), (170, 480844), (182, 449140), (221, 369880), (238, 343460), (260, 314398), (280, 291941), (340, 240422), (364, 224570), (442, 184940), (455, 179656), (476, 171730), (520, 157199), (595, 137384), (680, 120211), (728, 112285), (884, 92470), (910, 89828), (952, 85865), (1105, 73976), (1190, 68692), (1321, 61880), (1547, 52840), (1768, 46235), (1820, 44914), (2210, 36988), (2380, 34346), (2642, 30940), (3094, 26420), (3640, 22457), (4420, 18494), (4760, 17173), (5284, 15470), (6188, 13210), (6605, 12376), (7735, 10568), (8840, 9247)]