12400000020

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{402859}}^1$

素因数の和:402899

約数の個数: 120

約数和(自身を含む): 40946690400

約数和(自身を除く): 28546690380

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 27, 30, 36, 38, 45, 54, 57, 60, 76, 81, 90, 95, 108, 114, 135, 162, 171, 180, 190, 228, 270, 285, 324, 342, 380, 405, 513, 540, 570, 684, 810, 855, 1026, 1140, 1539, 1620, 1710, 2052, 2565, 3078, 3420, 5130, 6156, 7695, 10260, 15390, 30780, 402859, 805718, 1208577, 1611436, 2014295, 2417154, 3625731, 4028590, 4834308, 6042885, 7251462, 7654321, 8057180, 10877193, 12085770, 14502924, 15308642, 18128655, 21754386, 22962963, 24171540, 30617284, 32631579, 36257310, 38271605, 43508772, 45925926, 54385965, 65263158, 68888889, 72514620, 76543210, 91851852, 108771930, 114814815, 130526316, 137777778, 153086420, 163157895, 206666667, 217543860, 229629630, 275555556, 326315790, 344444445, 413333334, 459259260, 620000001, 652631580, 688888890, 826666668, 1033333335, 1240000002, 1377777780, 2066666670, 2480000004, 3100000005, 4133333340, 6200000010, 12400000020]

約数ペア:

[(1, 12400000020), (2, 6200000010), (3, 4133333340), (4, 3100000005), (5, 2480000004), (6, 2066666670), (9, 1377777780), (10, 1240000002), (12, 1033333335), (15, 826666668), (18, 688888890), (19, 652631580), (20, 620000001), (27, 459259260), (30, 413333334), (36, 344444445), (38, 326315790), (45, 275555556), (54, 229629630), (57, 217543860), (60, 206666667), (76, 163157895), (81, 153086420), (90, 137777778), (95, 130526316), (108, 114814815), (114, 108771930), (135, 91851852), (162, 76543210), (171, 72514620), (180, 68888889), (190, 65263158), (228, 54385965), (270, 45925926), (285, 43508772), (324, 38271605), (342, 36257310), (380, 32631579), (405, 30617284), (513, 24171540), (540, 22962963), (570, 21754386), (684, 18128655), (810, 15308642), (855, 14502924), (1026, 12085770), (1140, 10877193), (1539, 8057180), (1620, 7654321), (1710, 7251462), (2052, 6042885), (2565, 4834308), (3078, 4028590), (3420, 3625731), (5130, 2417154), (6156, 2014295), (7695, 1611436), (10260, 1208577), (15390, 805718), (30780, 402859)]