19806700

素因数分解:

$2^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{191}}^1$

素因数の和:283

約数の個数: 72

約数和(自身を含む): 46497024

約数和(自身を除く): 26690324

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 34, 50, 61, 68, 85, 100, 122, 170, 191, 244, 305, 340, 382, 425, 610, 764, 850, 955, 1037, 1220, 1525, 1700, 1910, 2074, 3050, 3247, 3820, 4148, 4775, 5185, 6100, 6494, 9550, 10370, 11651, 12988, 16235, 19100, 20740, 23302, 25925, 32470, 46604, 51850, 58255, 64940, 81175, 103700, 116510, 162350, 198067, 233020, 291275, 324700, 396134, 582550, 792268, 990335, 1165100, 1980670, 3961340, 4951675, 9903350, 19806700]

約数ペア:

[(1, 19806700), (2, 9903350), (4, 4951675), (5, 3961340), (10, 1980670), (17, 1165100), (20, 990335), (25, 792268), (34, 582550), (50, 396134), (61, 324700), (68, 291275), (85, 233020), (100, 198067), (122, 162350), (170, 116510), (191, 103700), (244, 81175), (305, 64940), (340, 58255), (382, 51850), (425, 46604), (610, 32470), (764, 25925), (850, 23302), (955, 20740), (1037, 19100), (1220, 16235), (1525, 12988), (1700, 11651), (1910, 10370), (2074, 9550), (3050, 6494), (3247, 6100), (3820, 5185), (4148, 4775)]