28045900

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{509}}^1$

素因数の和:571

約数の個数: 72

約数和(自身を含む): 66402000

約数和(自身を除く): 38356100

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 29, 38, 50, 58, 76, 95, 100, 116, 145, 190, 290, 380, 475, 509, 551, 580, 725, 950, 1018, 1102, 1450, 1900, 2036, 2204, 2545, 2755, 2900, 5090, 5510, 9671, 10180, 11020, 12725, 13775, 14761, 19342, 25450, 27550, 29522, 38684, 48355, 50900, 55100, 59044, 73805, 96710, 147610, 193420, 241775, 280459, 295220, 369025, 483550, 560918, 738050, 967100, 1121836, 1402295, 1476100, 2804590, 5609180, 7011475, 14022950, 28045900]

約数ペア:

[(1, 28045900), (2, 14022950), (4, 7011475), (5, 5609180), (10, 2804590), (19, 1476100), (20, 1402295), (25, 1121836), (29, 967100), (38, 738050), (50, 560918), (58, 483550), (76, 369025), (95, 295220), (100, 280459), (116, 241775), (145, 193420), (190, 147610), (290, 96710), (380, 73805), (475, 59044), (509, 55100), (551, 50900), (580, 48355), (725, 38684), (950, 29522), (1018, 27550), (1102, 25450), (1450, 19342), (1900, 14761), (2036, 13775), (2204, 12725), (2545, 11020), (2755, 10180), (2900, 9671), (5090, 5510)]