28047800

素因数分解:

$2^3\times 5^2\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{61}}^1$

素因数の和:118

約数の個数: 144

約数和(自身を含む): 76687800

約数和(自身を除く): 48640000

約数列:

[1, 2, 4, 5, 8, 10, 11, 19, 20, 22, 25, 38, 40, 44, 50, 55, 61, 76, 88, 95, 100, 110, 121, 122, 152, 190, 200, 209, 220, 242, 244, 275, 305, 380, 418, 440, 475, 484, 488, 550, 605, 610, 671, 760, 836, 950, 968, 1045, 1100, 1159, 1210, 1220, 1342, 1525, 1672, 1900, 2090, 2200, 2299, 2318, 2420, 2440, 2684, 3025, 3050, 3355, 3800, 4180, 4598, 4636, 4840, 5225, 5368, 5795, 6050, 6100, 6710, 7381, 8360, 9196, 9272, 10450, 11495, 11590, 12100, 12200, 12749, 13420, 14762, 16775, 18392, 20900, 22990, 23180, 24200, 25498, 26840, 28975, 29524, 33550, 36905, 41800, 45980, 46360, 50996, 57475, 57950, 59048, 63745, 67100, 73810, 91960, 101992, 114950, 115900, 127490, 134200, 140239, 147620, 184525, 229900, 231800, 254980, 280478, 295240, 318725, 369050, 459800, 509960, 560956, 637450, 701195, 738100, 1121912, 1274900, 1402390, 1476200, 2549800, 2804780, 3505975, 5609560, 7011950, 14023900, 28047800]

約数ペア:

[(1, 28047800), (2, 14023900), (4, 7011950), (5, 5609560), (8, 3505975), (10, 2804780), (11, 2549800), (19, 1476200), (20, 1402390), (22, 1274900), (25, 1121912), (38, 738100), (40, 701195), (44, 637450), (50, 560956), (55, 509960), (61, 459800), (76, 369050), (88, 318725), (95, 295240), (100, 280478), (110, 254980), (121, 231800), (122, 229900), (152, 184525), (190, 147620), (200, 140239), (209, 134200), (220, 127490), (242, 115900), (244, 114950), (275, 101992), (305, 91960), (380, 73810), (418, 67100), (440, 63745), (475, 59048), (484, 57950), (488, 57475), (550, 50996), (605, 46360), (610, 45980), (671, 41800), (760, 36905), (836, 33550), (950, 29524), (968, 28975), (1045, 26840), (1100, 25498), (1159, 24200), (1210, 23180), (1220, 22990), (1342, 20900), (1525, 18392), (1672, 16775), (1900, 14762), (2090, 13420), (2200, 12749), (2299, 12200), (2318, 12100), (2420, 11590), (2440, 11495), (2684, 10450), (3025, 9272), (3050, 9196), (3355, 8360), (3800, 7381), (4180, 6710), (4598, 6100), (4636, 6050), (4840, 5795), (5225, 5368)]