21806330

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{773}}^1$

素因数の和:831

約数の個数: 64

約数和(自身を含む): 49932288

約数和(自身を除く): 28125958

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 31, 35, 62, 65, 70, 91, 130, 155, 182, 217, 310, 403, 434, 455, 773, 806, 910, 1085, 1546, 2015, 2170, 2821, 3865, 4030, 5411, 5642, 7730, 10049, 10822, 14105, 20098, 23963, 27055, 28210, 47926, 50245, 54110, 70343, 100490, 119815, 140686, 167741, 239630, 311519, 335482, 351715, 623038, 703430, 838705, 1557595, 1677410, 2180633, 3115190, 4361266, 10903165, 21806330]

約数ペア:

[(1, 21806330), (2, 10903165), (5, 4361266), (7, 3115190), (10, 2180633), (13, 1677410), (14, 1557595), (26, 838705), (31, 703430), (35, 623038), (62, 351715), (65, 335482), (70, 311519), (91, 239630), (130, 167741), (155, 140686), (182, 119815), (217, 100490), (310, 70343), (403, 54110), (434, 50245), (455, 47926), (773, 28210), (806, 27055), (910, 23963), (1085, 20098), (1546, 14105), (2015, 10822), (2170, 10049), (2821, 7730), (3865, 5642), (4030, 5411)]