8439990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1$

素因数の和:126

約数の個数: 128

約数和(自身を含む): 24675840

約数和(自身を除く): 16235850

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 17, 19, 26, 30, 34, 38, 39, 51, 57, 65, 67, 78, 85, 95, 102, 114, 130, 134, 170, 190, 195, 201, 221, 247, 255, 285, 323, 335, 390, 402, 442, 494, 510, 570, 646, 663, 670, 741, 871, 969, 1005, 1105, 1139, 1235, 1273, 1326, 1482, 1615, 1742, 1938, 2010, 2210, 2278, 2470, 2546, 2613, 3230, 3315, 3417, 3705, 3819, 4199, 4355, 4845, 5226, 5695, 6365, 6630, 6834, 7410, 7638, 8398, 8710, 9690, 11390, 12597, 12730, 13065, 14807, 16549, 17085, 19095, 20995, 21641, 25194, 26130, 29614, 33098, 34170, 38190, 41990, 43282, 44421, 49647, 62985, 64923, 74035, 82745, 88842, 99294, 108205, 125970, 129846, 148070, 165490, 216410, 222105, 248235, 281333, 324615, 444210, 496470, 562666, 649230, 843999, 1406665, 1687998, 2813330, 4219995, 8439990]

約数ペア:

[(1, 8439990), (2, 4219995), (3, 2813330), (5, 1687998), (6, 1406665), (10, 843999), (13, 649230), (15, 562666), (17, 496470), (19, 444210), (26, 324615), (30, 281333), (34, 248235), (38, 222105), (39, 216410), (51, 165490), (57, 148070), (65, 129846), (67, 125970), (78, 108205), (85, 99294), (95, 88842), (102, 82745), (114, 74035), (130, 64923), (134, 62985), (170, 49647), (190, 44421), (195, 43282), (201, 41990), (221, 38190), (247, 34170), (255, 33098), (285, 29614), (323, 26130), (335, 25194), (390, 21641), (402, 20995), (442, 19095), (494, 17085), (510, 16549), (570, 14807), (646, 13065), (663, 12730), (670, 12597), (741, 11390), (871, 9690), (969, 8710), (1005, 8398), (1105, 7638), (1139, 7410), (1235, 6834), (1273, 6630), (1326, 6365), (1482, 5695), (1615, 5226), (1742, 4845), (1938, 4355), (2010, 4199), (2210, 3819), (2278, 3705), (2470, 3417), (2546, 3315), (2613, 3230)]