18529940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1$

素因数の和:94

約数の個数: 144

約数和(自身を含む): 50050560

約数和(自身を除く): 31520620

約数列:

[1, 2, 4, 5, 10, 11, 13, 19, 20, 22, 26, 31, 38, 44, 52, 55, 62, 65, 76, 95, 110, 121, 124, 130, 143, 155, 190, 209, 220, 242, 247, 260, 286, 310, 341, 380, 403, 418, 484, 494, 572, 589, 605, 620, 682, 715, 806, 836, 988, 1045, 1178, 1210, 1235, 1364, 1430, 1573, 1612, 1705, 2015, 2090, 2299, 2356, 2420, 2470, 2717, 2860, 2945, 3146, 3410, 3751, 4030, 4180, 4433, 4598, 4940, 5434, 5890, 6292, 6479, 6820, 7502, 7657, 7865, 8060, 8866, 9196, 10868, 11495, 11780, 12958, 13585, 15004, 15314, 15730, 17732, 18755, 22165, 22990, 25916, 27170, 29887, 30628, 31460, 32395, 37510, 38285, 44330, 45980, 48763, 54340, 59774, 64790, 71269, 75020, 76570, 84227, 88660, 97526, 119548, 129580, 142538, 149435, 153140, 168454, 195052, 243815, 285076, 298870, 336908, 356345, 421135, 487630, 597740, 712690, 842270, 926497, 975260, 1425380, 1684540, 1852994, 3705988, 4632485, 9264970, 18529940]

約数ペア:

[(1, 18529940), (2, 9264970), (4, 4632485), (5, 3705988), (10, 1852994), (11, 1684540), (13, 1425380), (19, 975260), (20, 926497), (22, 842270), (26, 712690), (31, 597740), (38, 487630), (44, 421135), (52, 356345), (55, 336908), (62, 298870), (65, 285076), (76, 243815), (95, 195052), (110, 168454), (121, 153140), (124, 149435), (130, 142538), (143, 129580), (155, 119548), (190, 97526), (209, 88660), (220, 84227), (242, 76570), (247, 75020), (260, 71269), (286, 64790), (310, 59774), (341, 54340), (380, 48763), (403, 45980), (418, 44330), (484, 38285), (494, 37510), (572, 32395), (589, 31460), (605, 30628), (620, 29887), (682, 27170), (715, 25916), (806, 22990), (836, 22165), (988, 18755), (1045, 17732), (1178, 15730), (1210, 15314), (1235, 15004), (1364, 13585), (1430, 12958), (1573, 11780), (1612, 11495), (1705, 10868), (2015, 9196), (2090, 8866), (2299, 8060), (2356, 7865), (2420, 7657), (2470, 7502), (2717, 6820), (2860, 6479), (2945, 6292), (3146, 5890), (3410, 5434), (3751, 4940), (4030, 4598), (4180, 4433)]