19472720

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{557}}^1$

素因数の和:612

約数の個数: 80

約数和(自身を含む): 49818240

約数和(自身を除く): 30345520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 23, 38, 40, 46, 76, 80, 92, 95, 115, 152, 184, 190, 230, 304, 368, 380, 437, 460, 557, 760, 874, 920, 1114, 1520, 1748, 1840, 2185, 2228, 2785, 3496, 4370, 4456, 5570, 6992, 8740, 8912, 10583, 11140, 12811, 17480, 21166, 22280, 25622, 34960, 42332, 44560, 51244, 52915, 64055, 84664, 102488, 105830, 128110, 169328, 204976, 211660, 243409, 256220, 423320, 486818, 512440, 846640, 973636, 1024880, 1217045, 1947272, 2434090, 3894544, 4868180, 9736360, 19472720]

約数ペア:

[(1, 19472720), (2, 9736360), (4, 4868180), (5, 3894544), (8, 2434090), (10, 1947272), (16, 1217045), (19, 1024880), (20, 973636), (23, 846640), (38, 512440), (40, 486818), (46, 423320), (76, 256220), (80, 243409), (92, 211660), (95, 204976), (115, 169328), (152, 128110), (184, 105830), (190, 102488), (230, 84664), (304, 64055), (368, 52915), (380, 51244), (437, 44560), (460, 42332), (557, 34960), (760, 25622), (874, 22280), (920, 21166), (1114, 17480), (1520, 12811), (1748, 11140), (1840, 10583), (2185, 8912), (2228, 8740), (2785, 6992), (3496, 5570), (4370, 4456)]