21174860

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1$

素因数の和:112

約数の個数: 144

約数和(自身を含む): 57915648

約数和(自身を除く): 36740788

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 31, 34, 35, 41, 49, 62, 68, 70, 82, 85, 98, 119, 124, 140, 155, 164, 170, 196, 205, 217, 238, 245, 287, 310, 340, 410, 434, 476, 490, 527, 574, 595, 620, 697, 820, 833, 868, 980, 1054, 1085, 1148, 1190, 1271, 1394, 1435, 1519, 1666, 2009, 2108, 2170, 2380, 2542, 2635, 2788, 2870, 3038, 3332, 3485, 3689, 4018, 4165, 4340, 4879, 5084, 5270, 5740, 6076, 6355, 6970, 7378, 7595, 8036, 8330, 8897, 9758, 10045, 10540, 12710, 13940, 14756, 15190, 16660, 17794, 18445, 19516, 20090, 21607, 24395, 25420, 25823, 30380, 34153, 35588, 36890, 40180, 43214, 44485, 48790, 51646, 62279, 68306, 73780, 86428, 88970, 97580, 103292, 108035, 124558, 129115, 136612, 151249, 170765, 177940, 216070, 249116, 258230, 302498, 311395, 341530, 432140, 516460, 604996, 622790, 683060, 756245, 1058743, 1245580, 1512490, 2117486, 3024980, 4234972, 5293715, 10587430, 21174860]

約数ペア:

[(1, 21174860), (2, 10587430), (4, 5293715), (5, 4234972), (7, 3024980), (10, 2117486), (14, 1512490), (17, 1245580), (20, 1058743), (28, 756245), (31, 683060), (34, 622790), (35, 604996), (41, 516460), (49, 432140), (62, 341530), (68, 311395), (70, 302498), (82, 258230), (85, 249116), (98, 216070), (119, 177940), (124, 170765), (140, 151249), (155, 136612), (164, 129115), (170, 124558), (196, 108035), (205, 103292), (217, 97580), (238, 88970), (245, 86428), (287, 73780), (310, 68306), (340, 62279), (410, 51646), (434, 48790), (476, 44485), (490, 43214), (527, 40180), (574, 36890), (595, 35588), (620, 34153), (697, 30380), (820, 25823), (833, 25420), (868, 24395), (980, 21607), (1054, 20090), (1085, 19516), (1148, 18445), (1190, 17794), (1271, 16660), (1394, 15190), (1435, 14756), (1519, 13940), (1666, 12710), (2009, 10540), (2108, 10045), (2170, 9758), (2380, 8897), (2542, 8330), (2635, 8036), (2788, 7595), (2870, 7378), (3038, 6970), (3332, 6355), (3485, 6076), (3689, 5740), (4018, 5270), (4165, 5084), (4340, 4879)]