21156534

素因数分解:

$2^1\times 3^2\times 7^2\times {\mathrm{17}}^2\times {\mathrm{83}}^1$

素因数の和:139

約数の個数: 108

約数和(自身を含む): 57326724

約数和(自身を除く): 36170190

約数列:

[1, 2, 3, 6, 7, 9, 14, 17, 18, 21, 34, 42, 49, 51, 63, 83, 98, 102, 119, 126, 147, 153, 166, 238, 249, 289, 294, 306, 357, 441, 498, 578, 581, 714, 747, 833, 867, 882, 1071, 1162, 1411, 1494, 1666, 1734, 1743, 2023, 2142, 2499, 2601, 2822, 3486, 4046, 4067, 4233, 4998, 5202, 5229, 6069, 7497, 8134, 8466, 9877, 10458, 12138, 12201, 12699, 14161, 14994, 18207, 19754, 23987, 24402, 25398, 28322, 29631, 36414, 36603, 42483, 47974, 59262, 69139, 71961, 73206, 84966, 88893, 127449, 138278, 143922, 167909, 177786, 207417, 215883, 254898, 335818, 414834, 431766, 503727, 622251, 1007454, 1175363, 1244502, 1511181, 2350726, 3022362, 3526089, 7052178, 10578267, 21156534]

約数ペア:

[(1, 21156534), (2, 10578267), (3, 7052178), (6, 3526089), (7, 3022362), (9, 2350726), (14, 1511181), (17, 1244502), (18, 1175363), (21, 1007454), (34, 622251), (42, 503727), (49, 431766), (51, 414834), (63, 335818), (83, 254898), (98, 215883), (102, 207417), (119, 177786), (126, 167909), (147, 143922), (153, 138278), (166, 127449), (238, 88893), (249, 84966), (289, 73206), (294, 71961), (306, 69139), (357, 59262), (441, 47974), (498, 42483), (578, 36603), (581, 36414), (714, 29631), (747, 28322), (833, 25398), (867, 24402), (882, 23987), (1071, 19754), (1162, 18207), (1411, 14994), (1494, 14161), (1666, 12699), (1734, 12201), (1743, 12138), (2023, 10458), (2142, 9877), (2499, 8466), (2601, 8134), (2822, 7497), (3486, 6069), (4046, 5229), (4067, 5202), (4233, 4998)]