19407760

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{97}}^1$

素因数の和:212

約数の個数: 80

約数和(自身を含む): 47465712

約数和(自身を除く): 28057952

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 61, 80, 82, 97, 122, 164, 194, 205, 244, 305, 328, 388, 410, 485, 488, 610, 656, 776, 820, 970, 976, 1220, 1552, 1640, 1940, 2440, 2501, 3280, 3880, 3977, 4880, 5002, 5917, 7760, 7954, 10004, 11834, 12505, 15908, 19885, 20008, 23668, 25010, 29585, 31816, 39770, 40016, 47336, 50020, 59170, 63632, 79540, 94672, 100040, 118340, 159080, 200080, 236680, 242597, 318160, 473360, 485194, 970388, 1212985, 1940776, 2425970, 3881552, 4851940, 9703880, 19407760]

約数ペア:

[(1, 19407760), (2, 9703880), (4, 4851940), (5, 3881552), (8, 2425970), (10, 1940776), (16, 1212985), (20, 970388), (40, 485194), (41, 473360), (61, 318160), (80, 242597), (82, 236680), (97, 200080), (122, 159080), (164, 118340), (194, 100040), (205, 94672), (244, 79540), (305, 63632), (328, 59170), (388, 50020), (410, 47336), (485, 40016), (488, 39770), (610, 31816), (656, 29585), (776, 25010), (820, 23668), (970, 20008), (976, 19885), (1220, 15908), (1552, 12505), (1640, 11834), (1940, 10004), (2440, 7954), (2501, 7760), (3280, 5917), (3880, 5002), (3977, 4880)]