21835260

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1$

素因数の和:180

約数の個数: 144

約数和(自身を含む): 70761600

約数和(自身を除く): 48926340

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 29, 30, 36, 45, 47, 58, 60, 87, 89, 90, 94, 116, 141, 145, 174, 178, 180, 188, 235, 261, 267, 282, 290, 348, 356, 423, 435, 445, 470, 522, 534, 564, 580, 705, 801, 846, 870, 890, 940, 1044, 1068, 1305, 1335, 1363, 1410, 1602, 1692, 1740, 1780, 2115, 2581, 2610, 2670, 2726, 2820, 3204, 4005, 4089, 4183, 4230, 5162, 5220, 5340, 5452, 6815, 7743, 8010, 8178, 8366, 8460, 10324, 12267, 12549, 12905, 13630, 15486, 16020, 16356, 16732, 20445, 20915, 23229, 24534, 25098, 25810, 27260, 30972, 37647, 38715, 40890, 41830, 46458, 49068, 50196, 51620, 61335, 62745, 75294, 77430, 81780, 83660, 92916, 116145, 121307, 122670, 125490, 150588, 154860, 188235, 232290, 242614, 245340, 250980, 363921, 376470, 464580, 485228, 606535, 727842, 752940, 1091763, 1213070, 1455684, 1819605, 2183526, 2426140, 3639210, 4367052, 5458815, 7278420, 10917630, 21835260]

約数ペア:

[(1, 21835260), (2, 10917630), (3, 7278420), (4, 5458815), (5, 4367052), (6, 3639210), (9, 2426140), (10, 2183526), (12, 1819605), (15, 1455684), (18, 1213070), (20, 1091763), (29, 752940), (30, 727842), (36, 606535), (45, 485228), (47, 464580), (58, 376470), (60, 363921), (87, 250980), (89, 245340), (90, 242614), (94, 232290), (116, 188235), (141, 154860), (145, 150588), (174, 125490), (178, 122670), (180, 121307), (188, 116145), (235, 92916), (261, 83660), (267, 81780), (282, 77430), (290, 75294), (348, 62745), (356, 61335), (423, 51620), (435, 50196), (445, 49068), (470, 46458), (522, 41830), (534, 40890), (564, 38715), (580, 37647), (705, 30972), (801, 27260), (846, 25810), (870, 25098), (890, 24534), (940, 23229), (1044, 20915), (1068, 20445), (1305, 16732), (1335, 16356), (1363, 16020), (1410, 15486), (1602, 13630), (1692, 12905), (1740, 12549), (1780, 12267), (2115, 10324), (2581, 8460), (2610, 8366), (2670, 8178), (2726, 8010), (2820, 7743), (3204, 6815), (4005, 5452), (4089, 5340), (4183, 5220), (4230, 5162)]