21492610

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1$

素因数の和:187

約数の個数: 64

約数和(自身を含む): 43545600

約数和(自身を除く): 22052990

約数列:

[1, 2, 5, 10, 19, 31, 38, 41, 62, 82, 89, 95, 155, 178, 190, 205, 310, 410, 445, 589, 779, 890, 1178, 1271, 1558, 1691, 2542, 2759, 2945, 3382, 3649, 3895, 5518, 5890, 6355, 7298, 7790, 8455, 12710, 13795, 16910, 18245, 24149, 27590, 36490, 48298, 52421, 69331, 104842, 113119, 120745, 138662, 226238, 241490, 262105, 346655, 524210, 565595, 693310, 1131190, 2149261, 4298522, 10746305, 21492610]

約数ペア:

[(1, 21492610), (2, 10746305), (5, 4298522), (10, 2149261), (19, 1131190), (31, 693310), (38, 565595), (41, 524210), (62, 346655), (82, 262105), (89, 241490), (95, 226238), (155, 138662), (178, 120745), (190, 113119), (205, 104842), (310, 69331), (410, 52421), (445, 48298), (589, 36490), (779, 27590), (890, 24149), (1178, 18245), (1271, 16910), (1558, 13795), (1691, 12710), (2542, 8455), (2759, 7790), (2945, 7298), (3382, 6355), (3649, 5890), (3895, 5518)]